Lime-saturater for water-purifying plants.



7 ratus or plant for UNITED STATES ERNnsT DECLERCQ,

D Patented May 23,1905 PATENT OFFICE.

OF LI LE, FRANCE.

LlME-SATURATER FOR WATER-PURIFYING PLANTS.

SPECIFICATION forming part of Letters Patent No. 790,482, dated May 23,1905.

Application filed November 5, 1903. Serial No- 179,982.

To all whom, itmay concern:

a Lille, Dpartement du Nord, in the Republic 'of France, have inventedcertain new and usefullmprovements in Lime-Saturaters for.

"Water-Purifying Plants ,,of which the following is a specification. 1

This invention relates to a device for saturating lime intended to beused in an appapurifying water by means of lime and soda.

.One object of the invention is to provide a device of this characterwhich will be simple in construction, durable in use, eflicie'nt inAnother object of the invention is to dispense with the use of amechanical stirrer, by means of which a quick and complete dissolutionof the lime is effected, and I accomplish this by mixing with the foulor impure water before it is admitted into the device a uantity oflime-water, whichis drawn from t e device, and also by discharging theimpure water into the residues of lime and ime-Water remaining in themachine from a previous operation. In this manner I get rid of thecarbonic acid, (free and bicarbonate acid,) and the water when it comesin contact with the bits of lime does not exercise any carbonatingaction, and thereby form a hard crust of carbonate of lime on the bitsor particles of lime.

With the above and other objects in view the invention consists ofcertain novel features of construction, combination, and arrangement ofparts, as will be hereinafter more fully described, andparticularlypointed out in the appended claims.

The accom anying drawing shows a vertical sectiona view through alime-saturating device constructed in accordance with my invention.

Referring to the drawing more particularly, the letter 1) denotes arecipient or receptacle which is substantially of cylindrical form andmounted upon a suitable base. The receptacle 1) has a conical bottom inwhich is provided a sludge draw-ofl valve 25, and adj acent to the upperend of said receptacle is a conical partition 21, which separates thelatter into. lower and upper chambers 22 23. The partition 21 is formedwith a cylindrical portion 29 and a valve 41, which is operated by meansof a chain 41. The foul or impure water which is to be treated with limeis fed into the lower compartment 22 through a vertical pipe 24, whichhas at its upper end an enlarged portion or funnel 24 The waterdischarged through the pipe 24 into the lower chamber 22 passes upbetween the under side of the partition 21 and a conical check-ring 26,which surrounds and is spaced from said partition 21, and then into thelower end of a discharge-pipe 27, the upper end of which is formed withan inwardly-projecting spout 27 This spout 27 discharges into acentrally-disposed vertical tube 28, the lower reduced portion of whichhas its contracted conical end 30 disposed directly above the said valve41. Surrounding the lower reduced'portion of said tube 28 and spacedfrom it and from said partition 21 is a conical deflector 31. Secured tothe side wall of the receptacle above the partition 21 and the deflector31 is a conical check-ring 32. In the compartment 23 of the receptacleis disposed a vessel 33, into which lime is inserted by means of abasket 34, made of perforated or reticulated material. The bottom of thevessel 33 is provided with a discharge-tube 37, the lower open end ofwhich discharges into the space between the lower end of the tube 28 andthe deflector 31. The water as it is discharged from the contracted endof the tube 28 draws the water, together with the lime solution, fromthe vessel 33 down through the lower open end of the deflector 31,forcing it up between the deflector 31 and said partition 21 asindicated by the arrows in the figure of the drawing. The checkring 32,being disposed directly above the space between said deflector and saidpartition, prevents the heavy particles of lime from circulating in theupper portion of the chamber 33 and causes-them to drop down upon thecontracted bottom of the partition 21 as will be readily understood.

as indicated by the arrows.

Disposed in the up er chamber 23 of the receptacle is a vesse 35, formedwith an opening 38 in its bottom and containing an elevatin device inthe form of a helical tube 36, which when rotated by a belt 39 or anyother suitable gearing will force the water charged with lime up througha pipe 40 and into the funnel 24 at the upper end of the pipe 24.

The receptacle 1) is provided at its top with an overflow outlet-spout5.

The operation of the device is as follows: The foul or impure water isdischarged into the upper end of the tube 24, together with the smalluantity of lime-water which is elevated. by tihe device 36 through thetube 40. From the pipe 24 this water is discharged into the bottom ofthe compartment 22 of the receptacle which contains the lime-waterremaining from the previous operation of the device. From thecompartment 22 the water is-discharged up through the pipe 27 and. intothe pipe 28, which in turn directs it to the bottom of the uppercompartment 23..

The contracted end 30 of the pipe 28 acts as an injector, and as thewater is discharged therefrom it causes the water above the deflector 31and the lime-water from the tube 37' to pass downwardly and thenupwardly between said deflector and the partition 21, This creates acirculation in the com aartment 22, which causes the water to be tioroughly saturated with lime. It will be seen that in the chamber 22 isformed the first precipitation of car bonate of lime, which isfacilitated by the alkaline state of the liquor, so that the waterpassing from the pipe 28 contains no free carbonic acid. The rapidformation of a crust of carbonate of lime on the grains of fresh lime isthus avoided, and as this formation interferes with the dissolution I amable to dispense with themechanical stirrer, which is necessaryin otherdevices of this character.

Various changes in the form, proportion, and the minor details ofconstruction may be resorted to without departing from the principle orsacrificing any of the advantages of a pipe for feeding the foul waterto the lower part of the lower chamber, a pipe connecting the top of thelatter chamber with the bottom of the upper chamber, a recipient for thelime in the upper chamber, and an outflowport at the top of the upperchamber.

2. In a plant for the purifying of water, a device for saturating withlime comp-rising a chamber having a conical bottom, a funnelshapedpartition in the said chamber, a feedpipe for the water having at itslower end a narrow conical opening located in the narrow part of thefunnel, a recipient for the lime, a discharge-pipe for the lime leadingto the said funnel, and an inclined annular partition fixed against thewall of the chamber above the funnel.

3-- In a plant for the purifying of water, a device for saturating withlime comprising two superposed chambers, a pipe for feeding the water tothe lower part of the lower chamber, a pipe connecting the top of thelower chamber with the bottom of the upper chamber, a recipient for thelime in the upper chamber, an outflow-port at the top of the upperchamber, and means for forcing a part of the water from the upperchamber and into the first-named pipe.

Intesti-mony that I claim the foregoing as my invention 1 have signed myname in presence of two subscribing witnesses.

ERNEST DECLERCQ. l/Vitnesses AUGUsTUs E. INGRAM, MAURICE RoUX.

